Full flow oil filter installation



Oct. 12,1954 P, KQV CS 2,691,429

FULL FLOW OIL FILTER INSTALLATION Filed OCC. 23, 1952 2 Sheets-Sheet 1'INVENTOR.

, Julius B Kova'cs Oct. 12, 1954 J. P. KOVACS 2,691,429

FULL FLOW OIL FILTER INSTALLATION Filed 001:. 23, 1952 2 Sheets-Sheet 2INVENTOR.

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Eli/@761) bk/07nd ATIURNEYS Patented Oct. 12, 1954 FULL FLOW 01LINSTALLATION Julius Paul Kovacs, Westfield, N. J., assignor to PurolatorProducts, Inc., Rahway, N. J., a corporation of Delaware ApplicationOctober 23, 1952, Serial No. 316,381

5 Claims. 1

This invention relates to a systemfor filtering the full amount oflubricating oil which flows through an internal combustion engine, andto apparatus for providing an efiective system.

It has long been a problem to install lubricating oil filters of thefull flow type on certain types of internal combustion engines(especially in the automotive field) without a costly, time-consuming,and complicated series of steps, unless provision for such installationhas been made part of the basic engine design.

The primary object of this invention is to provide apparatus enablingone to make a full flow filter installation on engines which inmanufacture have not provided'for such an installation; and to do so ina simple manner with a minimum of parts and effort.

It is a further object of this invention to provide means for .such aninstallation on new engines as well.

An additional object is to provide a simple part to accomplish thisinstallation.

These objects, and others that may appear, are accomplished by modifyingthe engine oil pump in such a manner that oil will flow from the engineto the modified pump, to a filter, then return to a part in the modifiedpump, and finally flow back into the engine to'complete the lubricationcycle. Obviously, this invention could be applied to engines which arenewly manufactured as well as to earlier ones already carrying oilpumps.

Other objects and features of the invention will become apparent fromthe following specification and the accompanying drawing, wherein:

Fig. 1 is a schematic representation of the complete lubrication cycleof an engine including the invention.

Fig. 2 is an exploded isometric view of a system embodying the inventionand showing the relationship of the various components of the system;and

Fig. 3 is a pictorial view showing the components mounted on an engine.

Referring to the drawing and first to Fig. 1, an oil system I isillustrated in connection with an engine block I I. The system includesa sump I2 connected by a conduit I3 to an outlet opening or port I4 inthe engine block. An adapter I5 is appropriately secured to the engineblock I I and has in it an independent through passageway I5, one end ofwhich registers with the outlet opening or port I 4 of said engineblock. The other end of said passageway I6 registers with the inletpassageway or port I I of an oil pump I8. The

outlet opening or port v with one end of a second independent passageway20 provided in the adapter I5. The other end of passageway 20 isconnected as by a conduit 2| with the inlet opening or port 22 of aconventional type of full flow filter 23. The outlet opening or port 24of the full flow filter 23 is connected by a conduit 25 with one end ofa third independent passageway 26 provided in the adapter I5. The otherend of said third independent passageway 26 is connected to the inletopening or port 21 of a passageway 28 connected to the engine oilgallery 29 and by conduits or passageways 30, 3| and 32 to the pressuregauge 33 and bearings 34 and the latter by conduit or passageway 35 isconnected back to the sump I2.

In Figs. 2 and 3, the same cycle is illustrated except that they showstructural details of the adapter I5, and a specific manner of itsmounting relative to the pump and the engine. In the case of enginesalready equipped with a pump I 8,

the adapter I5, as shown particularly in Fig. 2, is a metal block havingsurfaces shaped to fit the inner face of the pump I8 and the outer faceof a flange 31 on the engine block II. Since the adapter I5 is to beinterposed between said faces it has a constant section, and is onlymade as wide or thick as necessary to permit the addition of an outletand inlet opening respectively on the upper edge surface for thepassageways 20 and 26. As can be seen, the three channels or passagewaysI6, 28 and 26 are provided in the adapter I5. Channel I6 is provided forregistry with port I! of the pump and port Id of the engine side.Channel 20 is provided for registry at its opposite ends with port I9 ofthe pump and an opening or port 38 on the upper surface of the adapterI5 and is connected to conduit 2|. Channel 26 is provided for registrywith port 21 of the engine and an opening or port 39 on the uppersurface of adapter I5 and is connected to conduit 25.

In'order that the pump shaft Ml may still be driven from the usual driveshaft 4| in the engine block I I, an extension shaft 42 is attached tothe shaft 40 by conventional means such as a peened pin (not shown). Ahole 43 extends through the thickness of adapter I5 and the extensiondrive shaft 42 passes through this hole 43 in the adapter I5 and intothe engine through aperture 44, and engages the said usual driving shaft4|.

The adapter I5 is made part of the installation by merely placing itagainst the engine fiange 31, placing the pump I8 against it, andbolting through the aligned holes 45 and 46 on the I9 of the pumpregisters adapter, 47 and 48 on the pump, and into the existing tappedholes 49 and 50 on the engine flange 31. This automatically aligns theappropriate ports and openings and couples extension shaft 42 to driveshaft 4|.

With this arrangement, then, the oil passes from the pump outlet portl9, into adapter 15 flowing through channel 20, then out of adapteroutlet 38 into conduit or tubing 2|, and then into a conventional fullflow filter 23. Mounted in the filter 23 is a filtering element 5| ofknown outside-in type, so that the oil will flow via the inlet or port22 into the filter casing and pass through the element 5| so thatfiltration of all the engine oil will occur. A spring-loaded bypass 52is a conventional part of the filter 23, and is designed to open at apredetermined load if the filter element 5| becomes clogged. This allowsthe oil to bypass the filter element 5! and flow through portion 53 ofthe filter casing. After the oil has passed through the filter element5! or the portion 53, it will pass through center tube 54, out throughoutlet 24 and then through conduit or tube 25. From the latter it passesagain into the adapter [5 through inlet port 39 and flows throughchannel 25, whence it re-enters the engine block through port 2?. Theflow occurs within the engine as usual, passing via passageways 28, 30,32, 35 to gallery 29, gauge 33, and bearings 34 to sump I2. The oilleaves the sump l2 via passageway I3 and port It, enters and fiowsthrough channel it in the adapter 85, out of the latter and then viaport ll, returns to the pump I8. The whole cycle of flow is thenrepeated.

If it is desired to make up a completely new installation, the adapter15 and extension shaft 42 are made integral parts of the pump H3 andshaft 4!] respectively.

Further, it is not necessary that the filter be mounted away from theengine block as shown, but it may be mounted directly on the oil pumpand the conduits or tubes 2! and 25 may either be shortened oreliminated, depending upon location of the inlet and outlet ports 22 and24 of the filter 23.

Thus it can be seen that the invention provides a simple way ofproviding for full flow oil filtration on an engine that had no regularprovision for such a system, without need of reconstruction of theengine itself. It consists simply of modifying the oil pump l8 by addingto it an adapter l5 which diverts the fiow for eifective filtration.

Having thus described the invention, it will be seen that modificationsmay be made therein by one skilled in the art without departing from thespirit of the invention, or the scope of the appended claims. There isno intention, therefore, of limitation to the details disclosed.

What is claimed is:

1. In an internal combustion engine having oil inlet and oil outletports via which oil is circulated cyclically to lubricate moving partsof the engine and including an oil pump having inlet and outlet portsfor circulating oil to the engine, an adapter having a first independentpassageway registering with the oil outlet port of the engine and theinlet port of the pump, said adapter having a second independentpassageway registering with the outlet port of the pump and an outletport of the adapter connected to an inlet port of a full flow filter,and said adapter having a third independent passageway having an inletport at one of its ends connected with an outlet port of said filter andhaving the other end of said third passageway registering with said oilinlet port of said engine whereby oil is circulated by operation of thepump through the filter in its lubricating circulating cycle, saidadapter being mounted between the engine and the pump, and meansextending through an opening in said adapter for operating the pump fromthe engine.

2. In an internal combustion engine including an oil pump, a full flowoil filter installation comprising a filter casing and a filter element,and an adapter mounted on the engine between said engine and said pump,said adapter comprising means for conveying all of the oil from theengine via the adapter to the pump, from the pump to the adapter, fromthe adapter to the filter casing and from the filter casing via theadapter to the engine.

3. In an internal combustion engine including an oil pump having aninlet and an outlet, a full flow filter installation comprising afilter, and a body mounted between said engine and said pump, said bodyhaving oil passages therein arranged tocause all of the oil to fiow fromthe outlet of said pump through the body to said filter, from saidfilter through the body to said engine and from the engine through thebody to the inlet of said pump.

4. In an internal combustion engine including an oil pump having aninlet and an outlet and a drive shaft, a full flow oil filterinstallation comprising a filter casing and a filter element therein, anadapter mounted between said engine and said pump, said adaptercomprising means for conveying all of the oil from the outlet of saidpump to said filter, from said filter to said engine and from saidengine to the inlet of said pump, and an extension drive shaft connectedto said pump drive shaft and extending through said adapter for drivingconnection with said engine.

5. In an internal combustion engine having oil inlet and outlet portsvia which oil is circulated to lubricate moving parts of the engine andincluding an oil pump having inlet and outlet ports, an adapter mountedbetween said engine and said pump and having a first passagewayproviding communication between the engine oil outlet port .and the pumpinlet port, a second passageway providing communication between the pumpoutlet port and an inlet port of a full flow filter, and a thirdpassageway providing communication between an outlet port of said filterand the oil inlet port of said engine whereby all engine oil iscirculated through the filter in its lubricating cycle by operation ofsaid pump.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,720,475 Hewitt July 9, 1929 1,761,940 Shutts June 3, 19301,844,611 Spackman Feb. 9, 1932 1,854,971 Allen Apr. 19, 1932 2,474,009Molyneux June 21, 1949 FOREIGN PATENTS Number Country Date 936,693France Feb. 23, 1948 OTHER REFERENCES The Automotive Engineer of June1943, page '73.

